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<p>Titanium-clad steel plates have widely used in different applications. Herein, a high-strength titanium-clad steel plate was fabricated by a constant-temperature rolling test, and the rolling parameters are 800&#xa0;℃, 10 rolling pass, 50 revolution per min. A 3&#xa0;mm-thick plate was manufactured from a 10&#xa0;mm-thick laboratory-prepared billet through empirical equations. The microstructure of titanium-clad steel plate exhibited significant evolution, and the grains would change to deformation grains during the deformation. The interface consists of a layer of TiC and titanium-ferric intermetallic compounds with fragment shape. During the deformation, the layered TiC phase was compressed, and TiC grains rotated by 74.94° along the {111} &lt; 110 &gt; crystallographic slip system. As the TiC grains fractured into many pieces during the deformation, the titanium atoms diffused into steel slab, leading to the formation of new intermetallic compounds governed by local elemental concentration. A &lt; 111 &gt; //ND fiber texture was found in the steel slab around the interface, whereas a <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\{ 22\overline{4}3\}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mo stretchy="false">{</mo> <mn>22</mn> <mover> <mn>4</mn> <mo>¯</mo> </mover> <mn>3</mn> <mo stretchy="false">}</mo> </mrow> </math></EquationSource> </InlineEquation> &lt; 4512 &gt; plate texture was found in the titanium slab around the interface. The tensile strength of the titanium-clad steel plates was 645.7&#xa0;MPa after rolling, and the fracture mode was ductile. After 90° bending, the interface exhibited a solid connection without cracks. In the shear tensile tests, the interface did not break, indicating that the rolling process enabled good interfacial bonding.</p> Graphical Abstract <p></p>

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Microstructure evolution and mechanical properties of high-strength titanium-clad steel plate during isothermal rolling process

  • 期刊论文

  • 发表日期：

    2025年11月19日

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  • Xuan Chen,
  • Han Xiao,
  • Chao Yang,
  • Ya-ming Shi,
  • Kun Liu

摘要

Titanium-clad steel plates have widely used in different applications. Herein, a high-strength titanium-clad steel plate was fabricated by a constant-temperature rolling test, and the rolling parameters are 800 ℃, 10 rolling pass, 50 revolution per min. A 3 mm-thick plate was manufactured from a 10 mm-thick laboratory-prepared billet through empirical equations. The microstructure of titanium-clad steel plate exhibited significant evolution, and the grains would change to deformation grains during the deformation. The interface consists of a layer of TiC and titanium-ferric intermetallic compounds with fragment shape. During the deformation, the layered TiC phase was compressed, and TiC grains rotated by 74.94° along the {111} < 110 > crystallographic slip system. As the TiC grains fractured into many pieces during the deformation, the titanium atoms diffused into steel slab, leading to the formation of new intermetallic compounds governed by local elemental concentration. A < 111 > //ND fiber texture was found in the steel slab around the interface, whereas a \(\{ 22\overline{4}3\}\) { 22 4 ¯ 3 }  < 4512 > plate texture was found in the titanium slab around the interface. The tensile strength of the titanium-clad steel plates was 645.7 MPa after rolling, and the fracture mode was ductile. After 90° bending, the interface exhibited a solid connection without cracks. In the shear tensile tests, the interface did not break, indicating that the rolling process enabled good interfacial bonding.

Graphical Abstract